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Q. A 10.00- shell is travelling horizontally to the right at 25.0 relative to the ground when it explodes into two fragments, one of mass 3 and the other of mass 7.00. The lighter fragment goes directly forward, and the explosion releases 1.50 × 10^3 of mechanical energy to the fragments. Find out the magnitude of the velocity of the heavier fragment relative to the ground just after explosion.

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